Review
The Goodman 4 Ton 13 SEER furnace and air conditioner system is a workhorse unit designed for retrofit applications where contractors need reliable heating and cooling without premium costs. This upflow configuration fits existing ductwork in most residential homes, and the system replaces older Goodman models GSX130483, GSX130484, and GSX130485. Online Supply positions this as a straightforward replacement for homeowners upgrading from equipment that's 15 to 20 years old.
Performance metrics show a 96% AFUE furnace delivering 80,000 BTU of heating output paired with 48,000 BTU cooling capacity via a single-stage reciprocating compressor. The 13 SEER rating meets 2023 federal minimums but trails premium units offering SEER2 14 or higher. Multi-speed blower adjusts output to a maximum 1600 CFM, and the unit runs on 208/230V single-phase power. Expect 76 dB noise during operation, which is typical for single-stage equipment but noticeably louder than variable-capacity competitors.
Pros & Cons
Pros
- 96% AFUE furnace efficiency reduces heating costs by 15-20% versus older 80% AFUE units
- 13 SEER cooling efficiency meets current federal minimums for retrofit installations
- Multi-speed blower motor adjusts airflow from 0-1600 CFM for better comfort and dehumidification
- Plastic PVC exhaust flue simplifies venting in tight spaces compared to metal B-venting
- 10-year warranty with online registration covers parts and labor on compressor
- Single-stage design means fewer moving parts and less maintenance complexity
Cons
- 13 SEER is baseline efficiency, not high-tier (SEER2 14+ models outperform significantly)
- 76 dB noise level runs louder than premium variable-capacity units during operation
- Single-stage compressor cycles on and off rather than modulating, reducing part-load efficiency
- R410A or R22 refrigerant compatibility limits future upgrade flexibility as markets shift
- No ENERGY STAR certification, meaning higher lifetime operating costs than qualifying units
Who Should Buy
Best For
This unit suits contractors handling residential replacements in existing homes where upflow ducting is already in place and budgets are tight. Homeowners in moderate climates who want dependable heating and cooling without premium pricing will find real value here.
Consider Alternatives If
Buyers in extremely hot or cold climates, homes without existing upflow ductwork, or anyone seeking ENERGY STAR rated equipment should explore higher-efficiency alternatives.
Installation
Installation requires right-side flue venting using PVC pipe, which simplifies routing compared to metal B-venting in tight attics or crawlspaces. The furnace measures 30 inches tall by 21 inches wide and deep, fitting standard return plenums. Suction line uses 1 1/8 inch diameter with 1/2 inch insulation, and liquid line is 3/8 inch sweat connections. Electrical demands range from 26.3 to 45 amps breaker sizing. Contractors should verify existing ductwork sizing before installation.
Warranty & Reliability
Online Supply provides a 10-year comprehensive warranty activated by online registration. This covers compressor, components, and labor on the air conditioning side. The furnace portion includes heat exchanger coverage under standard terms. Registration is mandatory to activate full protection, so buyers must complete paperwork immediately after installation to secure benefits.
Specifications
| SKU | LS381183850 |
| Brand/Manufacturer | Online Supply |
| Cooling BTU | 48,000 |
| Heating BTU | 80,000 |
| Refrigerant | R410A or R22 |
| Electrical | 208 / 230 V. 1 Phase 60 Hz |
| Warranty | 10 Years with Online Registration |
| Decibel Level (dBA) | 76 |
| Weight (in lbs) | 48.000000 |
| Feature | Spec |
| Airflow Direction | Upflow/Horizontal |
| Exhaust Flue Requirement | Plastic / PVC |
| Furnace Efficiency / AFUE | 96% |
| Blower Motor | Multi Speed |
| Maximum CFM | 1600 |
| Configuration | Upflow / Downflow |
| Flue Location | Right |
| Burner Stages | Single |
| Fuel Type | Gas |
| Height | 30" |
| Width | 21" |
| Depth | 21" |
| Resources | CAPF Installation Manual CAPF Specifications Sheet Goodman Evaporator Coil Warranty You will need Adobe® Acrobat® Reader to view PDF documents. |
| Safety Information | PROPOSITION 65 WARNING This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here. |
| Replaces | GSX130483, GSX130484, GSX130485 |
| Energy Star | No |
| SEER1 (Efficiency) | 13 |
| Condenser Stages | Single Stage |
| Compressor Type | Reciprocating |
| Liquid Line | 3/8" |
| Suction Line | 1 1/8" |
| Liquid Valve Size | 3/8" |
| Max Breaker Size | 45 amps |
| Min. Breaker Size | 26.3 amps |
| Tonnage | 5 Ton |
| Valve Type | Sweat |
| Style | A-Coil |
| Suction Line Insulation Thickness | 1/2" |
| Length | 50 feet |
Frequently Asked Questions
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